# Ubuntu - Agent Execution Time Out

**URL:** <https://forum.cursor.com/t/ubuntu-agent-execution-time-out/159119>\
**Category:** Bug Reports\
**Tags:** crashes, linux\
**Created:** [April 27, 2026, 8:20am UTC](https://forum.cursor.com/t/ubuntu-agent-execution-time-out/159119 "2026-04-27T08:20:37Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![deanrie](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/deanrie/32/1263_2.png) [@deanrie](https://forum.cursor.com/u/deanrie)\
**Post date:** [April 27, 2026, 9:05am UTC](https://forum.cursor.com/t/ubuntu-agent-execution-time-out/159119/5 "2026-04-27T09:05:34Z")

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Hey, this is a known class of bugs with the extension host on our side `ERROR_EXTENSION_HOST_TIMEOUT`. The request doesn’t even reach the backend, so you get the error after about 30 seconds on any prompt. No ETA for a fix yet.

A few steps that often help:

1. Reload Window: `Ctrl+Shift+P` then `Developer: Reload Window`. If that doesn’t help, fully restart Cursor.
2. Disable extensions: run `cursor --disable-extensions` in your terminal and see if it still happens. If it stops, some extension is crashing the host.
3. Developer Tools: `Help → Toggle Developer Tools` then open the Console tab. Send the errors from there if you see any.
4. On Ubuntu with kernel 5.19, clearing the cache sometimes helps. Close Cursor and delete `~/.config/Cursor/Cache`, `~/.config/Cursor/CachedData`, `~/.config/Cursor/Code Cache`.

If nothing helps, run `Ctrl+Shift+P` then `Developer: Export Logs` and attach the zip, I’ll take a closer look. Your kernel version is pretty old 5.19.0-46, so if you can update to a newer one, it’s also worth trying.

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_[View the full topic](https://forum.cursor.com/t/ubuntu-agent-execution-time-out/159119)._